5:Formulae, Equations & Amounts Flashcards
1
Q
What does Avogadros constant represent?
A
The number of atoms per mole of the carbon-12 isotope.
2
Q
What is molar mass?
A
The mass per mole
g mol-1
3
Q
How do you calculate moles when mass & molar mass are given?
A
Moles= mass/ molar mass.
4
Q
Wha is an empirical formula?
A
Simplest whole number ratio of atoms of each element present in a compound.
5
Q
What is avogadros law?
A
Under the same temperature and pressure, one mole of any gas would occupy the same volume.
6
Q
What is molar gas volume?
A
The volume per mole of gas molecules.
7
Q
How do you calculate moles when volume is given?
A
Moles= Volume(dm3) / 24
